16 RF Conveyor Chain Checkpoints
Maintenance Checkpoints Checkpoints
Comments
Centering
A high-precision guide rail is essential to ensure proper centering of the conveyor. If centering is not accurate (with no side guide rail), the conveyor chain will wear and wobble, resulting in shorter chain life. When two or more sprockets are installed in a row, be sure to align the position of the sprocket teeth. If the sprocket teeth are not properly aligned, the working load will not be equally divided and will cause the chain to twist.
Sprocket alignment
Take-up If take-up on both sides is uneven, the conveyor chain will not engage smoothly with the sprocket. Initial chain tension Maintain adequate chain slack. If chain tension is too
high, loss of power will result and can be dangerous. If chain tension is too loose, the chain will climb the sprocket. A trial run after installation should be made under no-load conditions by switching the conveyor on and off several times intermittently. Continuous operation may begin after inspection. Stop a conveyor under no-load conditions or remaining material will cause an overload when the system starts again. Lubricate conveyor chain periodically, except for conveyors that require no lubrication, such as Flow Conveyors. Lubrication is essential for reducer, bearing, and driving roller chain. Parts fastened to a conveyor, such as buckets, aprons,
Trial run
Stopping a conveyor
Lubrication
Securing conveyor
parts slats, etc., are apt to loosen due to vibration. Be sure to fasten nuts and bolts securely and check them periodically. Amount of chain slack Regularly check and adjust the amount of chain slack. Temperature When differences in temperature, such as summer and winter or between day and night in winter, are severe, conveyor damage may occur. Under these circumstances, operate the conveyor carefully, taking any variations in temperature into account. Conveyor use and After installing the conveyor, prepare a record of the maintenance record expected capacity to be conveyed, conveyor speed,
r.p.m. of main shaft, electric current, voltage, working hours, actual conveying capacity, inspection date, lubricating date, details of trouble, etc. This will serve as protection against unexpected accidents and is also convenient for maintenance and repairs.
This information is intended to provide general guidelines for roller chain and conveyor chain installation and maintenance. Consult U.S. Tsubaki for specific application problems.
30 I NSTALLATION & M AINTENANCE
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